Here are the names of two epochs in Christian history:
* The Apostolic Age: This period generally refers to the time of the twelve apostles and early church leadership, traditionally from the ascension of Jesus (c. 30 AD) to the death of the last apostle, John (c. 100 AD).
* The Reformation: This refers to the 16th-century religious and political upheaval that challenged papal authority and led to the rise of Protestantism. A common starting date is 1517, when Martin Luther posted his Ninety-Five Theses.